Alder: Masculine; I wouldn't use it, because I know some cities and towns have "aldermen/women" at least in the U.S., so I think it would sound a little funny.
Ash: Either ; For a boy a GP (Isn't that the kid from Pokemon's name?)
Aspen: Either; I actually think I'd really like this on a girl.
Birch: Not really usable, IMO.
Cedar: Masculine, though I wouldn't use it.
Cherry: Feminine, but I wouldn't use it... almost... too sexual in connotation for my taste.
Cypress: Either, but I'd rather see it on a girl.
Ebony: Not really loving it... but I have had a girl in some of my college classes named this.
Elm: Not really usable.
Hawthorn: USE IT. MALE, all the way. :)
Hazel: I do love it, and feminine.
Holly: I'd use it, feminine.
Juniper: Feminine, usable. :)
Laurel: Blah... useable, but I'm so sick of Laur- anything...
Laura,
Lauren,
Laurie... too many around here. (
Lorelei is the exception. :) )
Lilac: Useable, feminine.
Linden: Useable, male.
Magnolia: Like it, feminine.
Maple: Like it, masculine.
Oak: I just don't like the sound of it.
Olive: Usable, female.
Plum: Not liking it...
Rowan: Useable, either sex.
Sequoia: Useable, feminine. Someone in my yoga class has a daughter named this. I didn't like it before that, but it is growing on me.
Spruce: Not really liking it.
Sumac: Not really liking it.
Willow: Usable, feminine.
Hawthorn
Gregor &
Aspen Gwendolen would be how I would use them. :)